This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 4 |
| 9 | 40 |
| 10 | 204 |
| 11 | 708 |
| 12 | 1968 |
| 13 | 4712 |
| 14 | 10064 |
| 15 | 19656 |
| 16 | 35744 |
| 17 | 61328 |
| 18 | 100272 |
| 19 | 157424 |
| 20 | 238736 |
| 21 | 351384 |
| 22 | 503888 |
| 23 | 706232 |
| 24 | 969984 |
| 25 | 1308416 |
| 26 | 1736624 |
| 27 | 2271648 |
| 28 | 2932592 |
| 29 | 3740744 |
| 30 | 4719696 |
| 31 | 5895464 |
| 32 | 7296608 |
| 33 | 8954352 |
| 34 | 10902704 |
| 35 | 13178576 |
| 36 | 15821904 |